﻿using System;
using System.Collections.Generic;

/* Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
namespace Sys.Workflow.Engine.Impl.Cmd
{

    using Sys.Workflow.Engine.Impl.Interceptor;

    /// 
    [Serializable]
    public class DeleteTaskCmd : ICommand<object>
    {

        private const long serialVersionUID = 1L;
        protected internal string taskId;
        protected internal ICollection<string> taskIds;
        protected internal bool cascade;
        protected internal string deleteReason;

        public DeleteTaskCmd(string taskId, string deleteReason, bool cascade)
        {
            this.taskId = taskId;
            this.cascade = cascade;
            this.deleteReason = deleteReason;
        }

        public DeleteTaskCmd(ICollection<string> taskIds, string deleteReason, bool cascade)
        {
            this.taskIds = taskIds;
            this.cascade = cascade;
            this.deleteReason = deleteReason;
        }

        public  virtual object  Execute(ICommandContext commandContext)
        {
            if (taskId is not null)
            {
                DeleteTask(commandContext, taskId);
            }
            else if (taskIds is object)
            {
                foreach (string taskId in taskIds)
                {
                    DeleteTask(commandContext, taskId);
                }
            }
            else
            {
                throw new ActivitiIllegalArgumentException("taskId and taskIds are null");
            }

            return null;
        }

        protected internal virtual void DeleteTask(ICommandContext commandContext, string taskId)
        {
            commandContext.TaskEntityManager.DeleteTask(taskId, deleteReason, cascade);
        }
    }

}